<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    let str='{"a": 12, "b": 5, "c": "abc"}';
    let json=JSON.parse(str);

    console.log(json);
    </script>
  </head>
  <body>

  </body>
</html>
